Calculate Your BMI
What is BMI (Body Mass Index)?
Body Mass Index (BMI) is a widely used screening tool that measures body fat based on height and weight. This BMI calculator helps determine whether your weight falls within a healthy range for your height. The BMI calculation is performed by dividing weight in kilograms by height in meters squared, providing a simple numerical value that indicates weight status.
Healthcare professionals worldwide use BMI calculators as an initial assessment tool to identify potential weight-related health risks. While BMI is a useful indicator, it should be considered alongside other health metrics for a comprehensive health assessment.
Understanding BMI Categories
BMI less than 18.5
May indicate malnutrition, eating disorders, or other health issues. Consider consulting a healthcare provider.
BMI 18.5 to 24.9
Indicates a healthy BMI range. Associated with the lowest health risks. Maintain through balanced diet and regular exercise.
BMI 25 to 29.9
Higher risk for heart disease, diabetes, and other conditions. Lifestyle changes recommended.
BMI 30 or higher
Significantly increased health risks. Medical consultation recommended for weight management plan.
How to Use the BMI Calculator
Choose Unit System
Select metric (kg/cm) or imperial (lbs/feet) units based on your preference.
Enter Measurements
Input your current weight and height accurately for precise results.
View Your Results
Get instant BMI calculation with category and healthy weight range.
Tips for Maintaining a Healthy BMI
Balanced Diet
Eat plenty of fruits, vegetables, whole grains, and lean proteins. Control portion sizes.
Regular Exercise
Aim for 150 minutes of moderate aerobic activity or 75 minutes of vigorous activity weekly.
Stay Hydrated
Drink plenty of water throughout the day and limit sugary beverages.
Quality Sleep
Get 7-9 hours of quality sleep per night to support healthy metabolism.
Stress Management
Practice stress-reduction techniques like meditation, yoga, or deep breathing.
Regular Monitoring
Track your weight and calculate BMI regularly to monitor progress.
Frequently Asked Questions About BMI
What is BMI and how is it calculated?
BMI (Body Mass Index) is a measure of body fat based on height and weight. It is calculated by dividing your weight in kilograms by your height in meters squared. The formula is: BMI = weight (kg) / (height (m))². This calculation provides a number that indicates whether you are underweight, normal weight, overweight, or obese.
What is a healthy BMI range?
According to WHO and CDC guidelines, a healthy BMI range for adults is between 18.5 and 24.9. A BMI below 18.5 indicates underweight, 25.0 to 29.9 indicates overweight, and 30.0 or higher indicates obesity. These ranges are standard for adults aged 20 and older.
Is BMI accurate for everyone?
While BMI is a useful screening tool, it has limitations. It doesn't distinguish between muscle and fat mass, so athletes and bodybuilders may have high BMI despite low body fat. It also doesn't account for age, sex, ethnicity, or body composition. BMI should be used as one indicator alongside other health assessments.
How can I lower my BMI if I'm overweight?
To lower your BMI, focus on creating a calorie deficit through healthy eating and regular exercise. Eat more fruits, vegetables, and whole grains while reducing processed foods and sugary drinks. Aim for at least 150 minutes of moderate aerobic activity per week. Consult with a healthcare provider or registered dietitian for personalized guidance.
What health risks are associated with high BMI?
High BMI is associated with increased risk of several health conditions including type 2 diabetes, heart disease, high blood pressure, stroke, certain cancers, sleep apnea, osteoarthritis, and fatty liver disease. Maintaining a healthy weight through diet and exercise can significantly reduce these risks.
Can I use this BMI calculator for children?
This BMI calculator is designed for adults aged 20 and older. Children and teenagers require different BMI calculations that take into account age and sex using BMI-for-age percentiles. For children ages 2-19, use a pediatric BMI calculator or consult with a pediatrician.